{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.671","julian_year":2026.671,"time":"2026-09-03T02:41:35.947Z","years_from_j2000":26.671,"frame":"date","applied":"Proper motion, then precession and nutation. The catalogued J2000 position is carried along the great circle the object's own published motion puts it on, at a constant velocity, and the result is referred to the true equator and equinox of this instant. Those are separate things: the motion moves the object, and the rotation turns the grid under it by about fifty arcseconds a year, with nutation adding up to another seventeen.","excluded":"Parallax, the radial-velocity perspective term, aberration and refraction; each is below the accuracy of the catalogued positions themselves. An object with no published proper motion comes back where the catalogue has it rather than at a fabricated zero, and says so with a null pm_ra_mas_yr. A body with no fixed position is not propagated at all — its place comes from an ephemeris, which is what /api/v1/visible answers with."},"slug":"kepler-19-b","name":"Kepler-19 b","class":"neptune_like_planet","category":"exoplanet","object_type":"Neptune-like planet","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":712.8539022652687,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":290.4209694,"dec_deg":37.8516556,"epoch_ra_deg":290.655494,"epoch_dec_deg":37.901946,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"Kepler-19","semi_major_axis_km":12655979.861219998,"periapsis_km":null,"mass_kg":3.643022399352741e+25,"mass_msun":0.0000183213,"constellation":"Lyra","discovered":"2011","featured":false,"url":"https://spacecatalog.org/object/kepler-19-b","radius_km":14089.2229,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"Kepler-19","host_v_mag":12.035,"uncertainties":{"mass_kg":[1.6124853243036724e+25,1.6722070029815862e+25],"radius_km":[306.14880000000005,306.14880000000005],"distance_ly":[3.1506706087437415,3.180024682738248],"host_mass_solar":[0.04,0.04],"inclination_deg":[0.44,0.06],"host_radius_solar":[0.018,0.018],"host_temperature_k":[60,60],"semi_major_axis_km":[179517.44483999998,179517.44483999998],"argument_of_periastron_deg":[11.7,68.9]},"host_mass_solar":0.936,"inclination_deg":89.94,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":0.859,"planets_in_system":3,"discovery_facility":"Kepler","host_temperature_k":5541,"orbital_period_days":9.28699,"transit_midpoint_bjd":2454959.7074,"eccentricity_upper_limit":0.41,"equilibrium_temperature_k":851,"argument_of_periastron_deg":59.1},"designations":[{"catalog":"Exoplanet","designation":"Kepler-19 b"},{"catalog":"Host star","designation":"Kepler-19"}],"source":{"id":"exoplanet_archive","name":"NASA Exoplanet Archive (Planetary Systems Composite Parameters)","url":"https://exoplanetarchive.ipac.caltech.edu/cgi-bin/TblView/nph-tblView?app=ExoTbls&config=PSCompPars","license":"Public domain (NASA)"},"updated_at":"2026-09-02T19:50:56.720Z","attribution":"Data from SpaceCatalog.org. Individual records carry their source and license in `source`; attribution is required for CC-BY and CC-BY-SA rows."}